What is the kinetic energy of an object that has a mass of 50.0 kg and a velocity of 18 m/s?

Kinetic energy is calculated with KE = ½mv². Substituting the mass and velocity gives KE = ½(50.0 kg)(18 m/s)² = 25 × 324 = 8,100 J. Therefore, the correct choice is 8,100 J.

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